I have a 15 ft canoe with a 40 lb thrust minn kota and the big yellow battery from walmart. I can go three days out on the lake fishing and camping using the battery for the motor, the lights and lights at the campsite while getting ready for bed. Just want to let you know when I am in the back of the canoe and there is no wieght in the front, on five with 40 lbs of thrust I am looking at the sky and water is coming in the back of the canoe.